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// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// @dart = 2.9
library test.relation_assignable;
import "dart:mirrors";
import "package:expect/expect.dart";
class Superclass {}
class Subclass1 extends Superclass {}
class Subclass2 extends Superclass {}
typedef bool NumberPredicate(num x);
typedef bool IntegerPredicate(int x);
typedef bool DoublePredicate(double x);
typedef num NumberGenerator();
typedef int IntegerGenerator();
typedef double DoubleGenerator();
class A<T> {}
class B<T> extends A<T> {}
class C<T extends num> {}
test(MirrorSystem mirrors) {
LibraryMirror coreLibrary = mirrors.findLibrary(#dart.core);
LibraryMirror thisLibrary = mirrors.findLibrary(#test.relation_assignable);
// Classes.
TypeMirror Super = thisLibrary.declarations[#Superclass] as TypeMirror;
TypeMirror Sub1 = thisLibrary.declarations[#Subclass1] as TypeMirror;
TypeMirror Sub2 = thisLibrary.declarations[#Subclass2] as TypeMirror;
TypeMirror Obj = coreLibrary.declarations[#Object] as TypeMirror;
TypeMirror Nul = coreLibrary.declarations[#Null] as TypeMirror;
Expect.isTrue(Obj.isAssignableTo(Obj));
Expect.isTrue(Super.isAssignableTo(Super));
Expect.isTrue(Sub1.isAssignableTo(Sub1));
Expect.isTrue(Sub2.isAssignableTo(Sub2));
Expect.isTrue(Nul.isAssignableTo(Nul));
Expect.isTrue(Sub1.isAssignableTo(Super));
Expect.isTrue(Super.isAssignableTo(Sub1));
Expect.isTrue(Sub2.isAssignableTo(Super));
Expect.isTrue(Super.isAssignableTo(Sub2));
Expect.isFalse(Sub2.isAssignableTo(Sub1));
Expect.isFalse(Sub1.isAssignableTo(Sub2));
Expect.isTrue(Sub1.isAssignableTo(Obj));
Expect.isTrue(Obj.isAssignableTo(Sub1));
Expect.isTrue(Sub2.isAssignableTo(Obj));
Expect.isTrue(Obj.isAssignableTo(Sub2));
Expect.isTrue(Super.isAssignableTo(Obj));
Expect.isTrue(Obj.isAssignableTo(Super));
Expect.isTrue(Nul.isAssignableTo(Obj));
Expect.isTrue(Obj.isAssignableTo(Nul));
Expect.isTrue(Nul.isAssignableTo(Super)); // Null type is bottom type.
Expect.isTrue(Super.isAssignableTo(Nul));
// Function typedef - argument type.
TypeMirror Func = coreLibrary.declarations[#Function] as TypeMirror;
TypedefMirror NumPred =
thisLibrary.declarations[#NumberPredicate] as TypedefMirror;
TypedefMirror IntPred =
thisLibrary.declarations[#IntegerPredicate] as TypedefMirror;
TypedefMirror DubPred =
thisLibrary.declarations[#DoublePredicate] as TypedefMirror;
Expect.isTrue(Func.isAssignableTo(Func));
Expect.isTrue(NumPred.isAssignableTo(NumPred));
Expect.isTrue(IntPred.isAssignableTo(IntPred));
Expect.isTrue(DubPred.isAssignableTo(DubPred));
Expect.isTrue(NumPred.isAssignableTo(Func));
Expect.isTrue(NumPred.isAssignableTo(IntPred));
Expect.isTrue(NumPred.isAssignableTo(DubPred));
Expect.isTrue(IntPred.isAssignableTo(Func));
Expect.isTrue(IntPred.isAssignableTo(NumPred));
Expect.isFalse(IntPred.isAssignableTo(DubPred));
Expect.isTrue(DubPred.isAssignableTo(Func));
Expect.isTrue(DubPred.isAssignableTo(NumPred));
Expect.isFalse(DubPred.isAssignableTo(IntPred));
Expect.isTrue(Func.isAssignableTo(Obj));
Expect.isTrue(NumPred.isAssignableTo(Obj));
Expect.isTrue(IntPred.isAssignableTo(Obj));
Expect.isTrue(DubPred.isAssignableTo(Obj));
Expect.isTrue(Obj.isAssignableTo(Func));
Expect.isTrue(Obj.isAssignableTo(NumPred));
Expect.isTrue(Obj.isAssignableTo(IntPred));
Expect.isTrue(Obj.isAssignableTo(DubPred));
// Function typedef - return type.
TypedefMirror NumGen =
thisLibrary.declarations[#NumberGenerator] as TypedefMirror;
TypedefMirror IntGen =
thisLibrary.declarations[#IntegerGenerator] as TypedefMirror;
TypedefMirror DubGen =
thisLibrary.declarations[#DoubleGenerator] as TypedefMirror;
Expect.isTrue(NumGen.isAssignableTo(NumGen));
Expect.isTrue(IntGen.isAssignableTo(IntGen));
Expect.isTrue(DubGen.isAssignableTo(DubGen));
Expect.isTrue(NumGen.isAssignableTo(Func));
Expect.isTrue(NumGen.isAssignableTo(IntGen));
Expect.isTrue(NumGen.isAssignableTo(DubGen));
Expect.isTrue(IntGen.isAssignableTo(Func));
Expect.isTrue(IntGen.isAssignableTo(NumGen));
Expect.isFalse(IntGen.isAssignableTo(DubGen));
Expect.isTrue(DubGen.isAssignableTo(Func));
Expect.isTrue(DubGen.isAssignableTo(NumGen));
Expect.isFalse(DubGen.isAssignableTo(IntGen));
Expect.isTrue(Func.isAssignableTo(Obj));
Expect.isTrue(NumGen.isAssignableTo(Obj));
Expect.isTrue(IntGen.isAssignableTo(Obj));
Expect.isTrue(DubGen.isAssignableTo(Obj));
Expect.isTrue(Obj.isAssignableTo(Func));
Expect.isTrue(Obj.isAssignableTo(NumGen));
Expect.isTrue(Obj.isAssignableTo(IntGen));
Expect.isTrue(Obj.isAssignableTo(DubGen));
// Function - argument type.
TypeMirror NumPredRef = NumPred.referent;
TypeMirror IntPredRef = IntPred.referent;
TypeMirror DubPredRef = DubPred.referent;
Expect.isTrue(Func.isAssignableTo(Func));
Expect.isTrue(NumPredRef.isAssignableTo(NumPredRef));
Expect.isTrue(IntPredRef.isAssignableTo(IntPredRef));
Expect.isTrue(DubPredRef.isAssignableTo(DubPredRef));
Expect.isTrue(NumPredRef.isAssignableTo(Func));
Expect.isTrue(NumPredRef.isAssignableTo(IntPredRef));
Expect.isTrue(NumPredRef.isAssignableTo(DubPredRef));
Expect.isTrue(IntPredRef.isAssignableTo(Func));
Expect.isTrue(IntPredRef.isAssignableTo(NumPredRef));
Expect.isFalse(IntPredRef.isAssignableTo(DubPredRef));
Expect.isTrue(DubPredRef.isAssignableTo(Func));
Expect.isTrue(DubPredRef.isAssignableTo(NumPredRef));
Expect.isFalse(DubPredRef.isAssignableTo(IntPredRef));
Expect.isTrue(Func.isAssignableTo(Obj));
Expect.isTrue(NumPredRef.isAssignableTo(Obj));
Expect.isTrue(IntPredRef.isAssignableTo(Obj));
Expect.isTrue(DubPredRef.isAssignableTo(Obj));
Expect.isTrue(Obj.isAssignableTo(Func));
Expect.isTrue(Obj.isAssignableTo(NumPredRef));
Expect.isTrue(Obj.isAssignableTo(IntPredRef));
Expect.isTrue(Obj.isAssignableTo(DubPredRef));
// Function - return type.
TypeMirror NumGenRef = NumGen.referent;
TypeMirror IntGenRef = IntGen.referent;
TypeMirror DubGenRef = DubGen.referent;
Expect.isTrue(NumGenRef.isAssignableTo(NumGenRef));
Expect.isTrue(IntGenRef.isAssignableTo(IntGenRef));
Expect.isTrue(DubGenRef.isAssignableTo(DubGenRef));
Expect.isTrue(NumGenRef.isAssignableTo(Func));
Expect.isTrue(NumGenRef.isAssignableTo(IntGenRef));
Expect.isTrue(NumGenRef.isAssignableTo(DubGenRef));
Expect.isTrue(IntGenRef.isAssignableTo(Func));
Expect.isTrue(IntGenRef.isAssignableTo(NumGenRef));
Expect.isFalse(IntGenRef.isAssignableTo(DubGenRef));
Expect.isTrue(DubGenRef.isAssignableTo(Func));
Expect.isTrue(DubGenRef.isAssignableTo(NumGenRef));
Expect.isFalse(DubGenRef.isAssignableTo(IntGenRef));
Expect.isTrue(Func.isAssignableTo(Obj));
Expect.isTrue(NumGenRef.isAssignableTo(Obj));
Expect.isTrue(IntGenRef.isAssignableTo(Obj));
Expect.isTrue(DubGenRef.isAssignableTo(Obj));
Expect.isTrue(Obj.isAssignableTo(Func));
Expect.isTrue(Obj.isAssignableTo(NumGenRef));
Expect.isTrue(Obj.isAssignableTo(IntGenRef));
Expect.isTrue(Obj.isAssignableTo(DubGenRef));
// Function typedef / function.
Expect.isTrue(NumPred.isAssignableTo(NumPredRef));
Expect.isTrue(IntPred.isAssignableTo(IntPredRef));
Expect.isTrue(DubPred.isAssignableTo(DubPredRef));
Expect.isTrue(NumPredRef.isAssignableTo(NumPred));
Expect.isTrue(IntPredRef.isAssignableTo(IntPred));
Expect.isTrue(DubPredRef.isAssignableTo(DubPred));
// Function typedef / function.
Expect.isTrue(NumGen.isAssignableTo(NumGenRef));
Expect.isTrue(IntGen.isAssignableTo(IntGenRef));
Expect.isTrue(DubGen.isAssignableTo(DubGenRef));
Expect.isTrue(NumGenRef.isAssignableTo(NumGen));
Expect.isTrue(IntGenRef.isAssignableTo(IntGen));
Expect.isTrue(DubGenRef.isAssignableTo(DubGen));
// Type variable.
TypeMirror TFromA =
(thisLibrary.declarations[#A] as ClassMirror).typeVariables.single;
TypeMirror TFromB =
(thisLibrary.declarations[#B] as ClassMirror).typeVariables.single;
TypeMirror TFromC =
(thisLibrary.declarations[#C] as ClassMirror).typeVariables.single;
Expect.isTrue(TFromA.isAssignableTo(TFromA));
Expect.isTrue(TFromB.isAssignableTo(TFromB));
Expect.isTrue(TFromC.isAssignableTo(TFromC));
Expect.isFalse(TFromA.isAssignableTo(TFromB));
Expect.isFalse(TFromA.isAssignableTo(TFromC));
Expect.isFalse(TFromB.isAssignableTo(TFromA));
Expect.isFalse(TFromB.isAssignableTo(TFromC));
Expect.isFalse(TFromC.isAssignableTo(TFromA));
Expect.isFalse(TFromC.isAssignableTo(TFromB));
TypeMirror Num = coreLibrary.declarations[#num] as TypeMirror;
Expect.isTrue(TFromC.isAssignableTo(Num));
Expect.isTrue(Num.isAssignableTo(TFromC));
// dynamic & void.
TypeMirror Dynamic = mirrors.dynamicType;
Expect.isTrue(Dynamic.isAssignableTo(Dynamic));
Expect.isTrue(Obj.isAssignableTo(Dynamic));
Expect.isTrue(Super.isAssignableTo(Dynamic));
Expect.isTrue(Sub1.isAssignableTo(Dynamic));
Expect.isTrue(Sub2.isAssignableTo(Dynamic));
Expect.isTrue(NumPred.isAssignableTo(Dynamic));
Expect.isTrue(IntPred.isAssignableTo(Dynamic));
Expect.isTrue(DubPred.isAssignableTo(Dynamic));
Expect.isTrue(NumPredRef.isAssignableTo(Dynamic));
Expect.isTrue(IntPredRef.isAssignableTo(Dynamic));
Expect.isTrue(DubPredRef.isAssignableTo(Dynamic));
Expect.isTrue(NumGen.isAssignableTo(Dynamic));
Expect.isTrue(IntGen.isAssignableTo(Dynamic));
Expect.isTrue(DubGen.isAssignableTo(Dynamic));
Expect.isTrue(NumGenRef.isAssignableTo(Dynamic));
Expect.isTrue(IntGenRef.isAssignableTo(Dynamic));
Expect.isTrue(DubGenRef.isAssignableTo(Dynamic));
Expect.isTrue(TFromA.isAssignableTo(Dynamic));
Expect.isTrue(TFromB.isAssignableTo(Dynamic));
Expect.isTrue(TFromC.isAssignableTo(Dynamic));
Expect.isTrue(Dynamic.isAssignableTo(Obj));
Expect.isTrue(Dynamic.isAssignableTo(Super));
Expect.isTrue(Dynamic.isAssignableTo(Sub1));
Expect.isTrue(Dynamic.isAssignableTo(Sub2));
Expect.isTrue(Dynamic.isAssignableTo(NumPred));
Expect.isTrue(Dynamic.isAssignableTo(IntPred));
Expect.isTrue(Dynamic.isAssignableTo(DubPred));
Expect.isTrue(Dynamic.isAssignableTo(NumPredRef));
Expect.isTrue(Dynamic.isAssignableTo(IntPredRef));
Expect.isTrue(Dynamic.isAssignableTo(DubPredRef));
Expect.isTrue(Dynamic.isAssignableTo(NumGen));
Expect.isTrue(Dynamic.isAssignableTo(IntGen));
Expect.isTrue(Dynamic.isAssignableTo(DubGen));
Expect.isTrue(Dynamic.isAssignableTo(NumGenRef));
Expect.isTrue(Dynamic.isAssignableTo(IntGenRef));
Expect.isTrue(Dynamic.isAssignableTo(DubGenRef));
Expect.isTrue(Dynamic.isAssignableTo(TFromA));
Expect.isTrue(Dynamic.isAssignableTo(TFromB));
Expect.isTrue(Dynamic.isAssignableTo(TFromC));
TypeMirror Void = mirrors.voidType;
Expect.isTrue(Void.isAssignableTo(Void));
Expect.isFalse(Obj.isAssignableTo(Void));
Expect.isFalse(Super.isAssignableTo(Void));
Expect.isFalse(Sub1.isAssignableTo(Void));
Expect.isFalse(Sub2.isAssignableTo(Void));
Expect.isFalse(NumPred.isAssignableTo(Void));
Expect.isFalse(IntPred.isAssignableTo(Void));
Expect.isFalse(DubPred.isAssignableTo(Void));
Expect.isFalse(NumPredRef.isAssignableTo(Void));
Expect.isFalse(IntPredRef.isAssignableTo(Void));
Expect.isFalse(DubPredRef.isAssignableTo(Void));
Expect.isFalse(NumGen.isAssignableTo(Void));
Expect.isFalse(IntGen.isAssignableTo(Void));
Expect.isFalse(DubGen.isAssignableTo(Void));
Expect.isFalse(NumGenRef.isAssignableTo(Void));
Expect.isFalse(IntGenRef.isAssignableTo(Void));
Expect.isFalse(DubGenRef.isAssignableTo(Void));
Expect.isFalse(TFromA.isAssignableTo(Void));
Expect.isFalse(TFromB.isAssignableTo(Void));
Expect.isFalse(TFromC.isAssignableTo(Void));
Expect.isFalse(Void.isAssignableTo(Obj));
Expect.isFalse(Void.isAssignableTo(Super));
Expect.isFalse(Void.isAssignableTo(Sub1));
Expect.isFalse(Void.isAssignableTo(Sub2));
Expect.isFalse(Void.isAssignableTo(NumPred));
Expect.isFalse(Void.isAssignableTo(IntPred));
Expect.isFalse(Void.isAssignableTo(DubPred));
Expect.isFalse(Void.isAssignableTo(NumPredRef));
Expect.isFalse(Void.isAssignableTo(IntPredRef));
Expect.isFalse(Void.isAssignableTo(DubPredRef));
Expect.isFalse(Void.isAssignableTo(NumGen));
Expect.isFalse(Void.isAssignableTo(IntGen));
Expect.isFalse(Void.isAssignableTo(DubGen));
Expect.isFalse(Void.isAssignableTo(NumGenRef));
Expect.isFalse(Void.isAssignableTo(IntGenRef));
Expect.isFalse(Void.isAssignableTo(DubGenRef));
Expect.isFalse(Void.isAssignableTo(TFromA));
Expect.isFalse(Void.isAssignableTo(TFromB));
Expect.isFalse(Void.isAssignableTo(TFromC));
Expect.isTrue(Dynamic.isAssignableTo(Void));
Expect.isTrue(Void.isAssignableTo(Dynamic));
}
main() {
test(currentMirrorSystem());
}